6778902618 has 48 divisors (see below), whose sum is σ = 15317842176. Its totient is φ = 2164181760.

The previous prime is 6778902523. The next prime is 6778902623. The reversal of 6778902618 is 8162098776.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8496 + ... + 116747.

It is an arithmetic number, because the mean of its divisors is an integer number (319121712).

Almost surely, 2^6778902618 is an apocalyptic number.

6778902618 is an abundant number, since it is smaller than the sum of its proper divisors (8538939558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6778902618 is a wasteful number, since it uses less digits than its factorization.

6778902618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125379 (or 125376 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 6778902618 is about 82334.0914688442. The cubic root of 6778902618 is about 1892.5751426438.

The spelling of 6778902618 in words is "six billion, seven hundred seventy-eight million, nine hundred two thousand, six hundred eighteen".